Doherty Slate Roofing

The City of Somerville requires a building permit for roof replacement through the Inspectional Services Department. Massachusetts code requires ice-and-water shield membrane at the eaves and in valleys as the primary defense against ice dams during freeze-thaw cycles. Properties in Somerville's local historic districts (parts of Spring Hill, the Tufts University area) need Historic Preservation Commission review for visible changes in roof material or color. A tear-off requires dumpster placement on Somerville's notoriously tight streets — often a real logistical constraint — and full removal of old layers down to the deck so the roofer can inspect the sheathing.

Roofing in Somerville sits in line with the inner Boston metro market — generally higher than the outer suburbs. Flat-roof EPDM or TPO on a triple-decker or two-family, the most common job here, typically runs $8,000–$18,000 for the membrane and flashing. An asphalt architectural re-roof on the city's few pitched single-families runs $9,000–$24,000 by size, pitch, and complexity. Standing-seam metal is $22,000–$45,000. Tight street access and dumpster constraints add to nearly every job, and tear-off of multiple existing layers adds disposal cost. Condo-shared roofs add coordination time that can stretch timelines.

Massachusetts requires a written contract and a Home Improvement Contractor registration for most residential roofing work; ask for the registration number and check it before paying a deposit.

More on permits, costs, rebates and common questions, plus every other roofing contractor serving the town, on the Roofing in Somerville page.